1 /* $NetBSD: mcontext.h,v 1.4 2003/10/08 22:43:01 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Klaus Klein and by Jason R. Thorpe of Wasabi Systems, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 *
38 * $FreeBSD: releng/8.4/sys/arm/include/ucontext.h 129198 2004-05-14 11:46:45Z cognet $
39 */
40
41 #ifndef _MACHINE_MCONTEXT_H_
42 #define _MACHINE_MCONTEXT_H_
43 /*
44 * General register state
45 */
46 #define _NGREG 17
47 typedef unsigned int __greg_t;
48 typedef __greg_t __gregset_t[_NGREG];
49
50 #define _REG_R0 0
51 #define _REG_R1 1
52 #define _REG_R2 2
53 #define _REG_R3 3
54 #define _REG_R4 4
55 #define _REG_R5 5
56 #define _REG_R6 6
57 #define _REG_R7 7
58 #define _REG_R8 8
59 #define _REG_R9 9
60 #define _REG_R10 10
61 #define _REG_R11 11
62 #define _REG_R12 12
63 #define _REG_R13 13
64 #define _REG_R14 14
65 #define _REG_R15 15
66 #define _REG_CPSR 16
67 /* Convenience synonyms */
68 #define _REG_FP _REG_R11
69 #define _REG_SP _REG_R13
70 #define _REG_LR _REG_R14
71 #define _REG_PC _REG_R15
72
73 /*
74 * Floating point register state
75 */
76 /* Note: the storage layout of this structure must be identical to ARMFPE! */
77 typedef struct {
78 unsigned int __fp_fpsr;
79 struct {
80 unsigned int __fp_exponent;
81 unsigned int __fp_mantissa_hi;
82 unsigned int __fp_mantissa_lo;
83 } __fp_fr[8];
84 } __fpregset_t;
85
86 typedef struct {
87 unsigned int __vfp_fpscr;
88 unsigned int __vfp_fstmx[33];
89 unsigned int __vfp_fpsid;
90 } __vfpregset_t;
91
92 typedef struct {
93 __gregset_t __gregs;
94 union {
95 __fpregset_t __fpregs;
96 __vfpregset_t __vfpregs;
97 } __fpu;
98 } mcontext_t;
99
100 /* Machine-dependent uc_flags */
101 #define _UC_ARM_VFP 0x00010000 /* FPU field is VFP */
102
103 /* used by signal delivery to indicate status of signal stack */
104 #define _UC_SETSTACK 0x00020000
105 #define _UC_CLRSTACK 0x00040000
106
107 #define _UC_MACHINE_PAD 3 /* Padding appended to ucontext_t */
108
109 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
110 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
111 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0])
112
113 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
114
115 #endif /* !_MACHINE_MCONTEXT_H_ */
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